appDisplay: Apply overshoot threshold to the left as well

We also want to apply this threshold when overshooting to the left, not
only to the right.

Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/4774

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2581>

diff --git a/js/ui/appDisplay.js b/js/ui/appDisplay.js
index db87c063f46e3f051d7b0aacccd7cfceb8658dec..3fa1451d09300c77be28b904753da482fff1a50a 100644 (file)
--- a/js/ui/appDisplay.js
+++ b/js/ui/appDisplay.js
@@ -851,7 +851,9 @@ var BaseAppView = GObject.registerClass({
         const [gridWidth, gridHeight] = this.get_transformed_size();
 
         const vertical = this._orientation === Clutter.Orientation.VERTICAL;
-        const gridStart = vertical ? gridY : gridX;
+        const gridStart = vertical ?
+            ? gridY + DRAG_OVERSHOOT_THRESHOLD
+            : gridX + DRAG_OVERSHOOT_THRESHOLD;
         const gridEnd = vertical
             ? gridY + gridHeight - OVERSHOOT_THRESHOLD
             : gridX + gridWidth - OVERSHOOT_THRESHOLD;